2194771138576 has 45 divisors (see below), whose sum is σ = 4445569268959. Its totient is φ = 1049607968288.

The previous prime is 2194771138543. The next prime is 2194771138603. The reversal of 2194771138576 is 6758311774912.

The square root of 2194771138576 is 1481476.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 136287741 + ... + 136303843.

Almost surely, 2^{2194771138576} is an apocalyptic number.

2194771138576 is the 1481476-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2194771138576

2194771138576 is an abundant number, since it is smaller than the sum of its proper divisors (2250798130383).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2194771138576 is an frugal number, since it uses more digits than its factorization.

2194771138576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32260 (or 16128 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 61.

The spelling of 2194771138576 in words is "two trillion, one hundred ninety-four billion, seven hundred seventy-one million, one hundred thirty-eight thousand, five hundred seventy-six".